首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1210篇
  免费   47篇
  国内免费   1篇
  2023年   19篇
  2022年   39篇
  2021年   58篇
  2020年   30篇
  2019年   38篇
  2018年   61篇
  2017年   44篇
  2016年   63篇
  2015年   73篇
  2014年   77篇
  2013年   105篇
  2012年   123篇
  2011年   92篇
  2010年   43篇
  2009年   41篇
  2008年   42篇
  2007年   41篇
  2006年   27篇
  2005年   35篇
  2004年   19篇
  2003年   23篇
  2002年   19篇
  2001年   17篇
  2000年   10篇
  1999年   7篇
  1998年   7篇
  1997年   5篇
  1995年   3篇
  1994年   4篇
  1993年   5篇
  1992年   6篇
  1991年   8篇
  1990年   14篇
  1989年   8篇
  1988年   3篇
  1987年   4篇
  1986年   4篇
  1985年   6篇
  1984年   4篇
  1983年   2篇
  1982年   2篇
  1981年   2篇
  1980年   2篇
  1978年   4篇
  1977年   3篇
  1976年   3篇
  1975年   2篇
  1974年   2篇
  1972年   2篇
  1958年   2篇
排序方式: 共有1258条查询结果,搜索用时 437 毫秒
11.
12.
During the survey of two successive years 2012–2013, in nearby places of Gorakhpur districts, Uttar Pradesh, India, Arundo donax plants were found to be exhibiting witches’ broom, excessive branching accompanied with little leaf symptoms with considerable disease incidence. Nested PCR carried out with universal primers pair R16F2n/R16R2 employing the PCR (P1/P7) product as a template DNA (1:20) resulted in expected size positive amplification ~1.2 kb in all symptom-bearing plants suggested the association of phytoplasma with witches’ broom disease of Narkat plants. BLASTn analysis of the 16S rRNA gene sequence showed the highest (99%) sequence identity with Candidatus phytoplasma asteris (16SrI group). In phylogenetic analysis, the sequence data showed close relationships with the members of 16SrI phytoplasma and clustered within a single clade of 16SrI group and closed to B subgroup representatives. This is a first report of 16Sr I-B group phytoplasma associated with witches’ broom accompanied with little leaf disease of Narkat in India.  相似文献   
13.
International Journal of Peptide Research and Therapeutics - Marine snails are abundant sources of biologically important conopeptides with their potential applications in drug development. The...  相似文献   
14.
Russian Journal of Bioorganic Chemistry - Discovery towards the potent antimicrobial agents is indispensable for the treatment of infections caused by resistant microbes. Thus, we prepared a novel...  相似文献   
15.
Journal of Plant Biochemistry and Biotechnology - Pigeonpea, an important legume crop is a good host plant for lac cultivation in North East India. In the present study, sixty-three polymorphic EST...  相似文献   
16.

In the recent past, huge emphasis has been given to the epigenetic alterations of the genes responsible for the cause of neurological disorders. Earlier, the scientists believed somatic changes and modifications in the genetic makeup of DNA to be the main cause of the neurodegenerative diseases. With the increase in understanding of the neural network and associated diseases, it was observed that alterations in the gene expression were not always originated by the change in the genetic sequence. For this reason, extensive research has been conducted to understand the role of epigenetics in the pathophysiology of several neurological disorders including Alzheimer’s disease, Parkinson’s disease and, Huntington’s disease. In a healthy person, the epigenetic modifications play a crucial role in maintaining the homeostasis of a cell by either up-regulating or down-regulating the genes. Therefore, improved understanding of these modifications may provide better insight about the diseases and may serve as potential therapeutic targets for their treatment. The present review describes various epigenetic modifications involved in the pathology of Parkinson’s Disease (PD) backed by multiple researches carried out to study the gene expression regulation related to the epigenetic alterations. Additionally, we will briefly go through the current scenario about the various treatment therapies including small molecules and multiple phytochemicals potent enough to reverse these alterations and the future directions for a better management of PD.

  相似文献   
17.
18.
International Journal of Peptide Research and Therapeutics - The conopeptides are the conotoxin of Conus loroisii have wide applications in drug development. This work emphasizes the isolation and...  相似文献   
19.
20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号